/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package com.badlogic.gdx.math;

public enum Interpolation {
	linear, fade;

	public float apply (float alpha) {
		switch (this) {
		case linear:
			return alpha;
		case fade:
			return alpha * alpha * alpha * (alpha * (alpha * 6 - 15) + 10);
		}
		return 0; // Can't happen.
	}
}